He commented on the Evangelical NT Blog the following brief note:
maurice a. robinson2:26 p.m., May 15, 2015'There remain some gems in the older works, particularly in relation to MSS no longer extant or not currently available. Example: for the Pericope Adulterae, Matthaei's (reasonably complete) collations are all that remain available for GA MSS 238, 241, 242, 252, 258.'
In the interest of making those collations (readings published in the footnotes of Matthaei's Volume on John) available, we have taken screenshots and provide them here for researchers to ponder and make use of (pg 138-147 inclusive):